Cornices in this context means Phag-na/Ngangkey/Phuto Boo, Bogh, Norbu Bagam, Norbu Horzhu, Choetseg, Pedma, Tsechukhanyim/Langna, Dhung, Jang-Dhung, Zimchung and Drey-Zhu (refer Appendix 1).
These cornices may be used in different combinations to achieve certain hierarchy and aesthetic look.
Cornice Requirement on a Building.
Bogh and Phag-na are not mandatory on a single storey building that has only Payab windows.
On a single storey shamig (ekra) building either two layers of Bogh with thicker Bogh-khep may be laid or one layer of Bogh and Phag-na.
Cornices are permissible on a building that has only Payab windows and is more than one storey.
Minimum cornices requirement on a building with Rabsel are Phag-khep, Phag-na, one layer of Bogh (up to two storey, more than two storey two layers of Bogh is required) Pedma and Dhung on the Rabsel and Tsechukhanyim, Pedma and Dhung at the bottom.
Photo 6a
Depicts the full cornice of a Gomang Rabsel. In descending order are Phag-na khep, Phag-na, Cham, Bogh, Choetseg, Pedma, Norbu Bagam, Norbu Horzhu and Dhung.
The full cornices on the Rabsel would be Phag-khep, Phag-na, Cham, Bogh, Choetseg, edma and Dhung. At the bottom of the Rabsel are Tsechukhanyim, Choetseg, Pedma and Jang-Dhung.
To achieve the architectural richness on a Rabsel one can add a layer of Bogh, Choetseg and Drey-Zhu.
On a single Rabsel (flg.6.b) Langna and Drey-Zhu are added below the Tsechukhanyim's Dhung to increase the architectural richness, In such cases the cornices on the Rabsel should be Dhung, Pedma, dbuble layer Bogh, Phag-na and Phag-khep. However, if double tiered Rabsel is used on a building as shown in Illus. 2.b then Langna, Drey-Zhu will be attached to the bottom member and double Bogh is provided between the two layers of Rabsel and on the top the cornices will be same as on single Rabsel. In Illus. 2.c Drey-Zhu is omifted.
Omission of layer of Bogh or Phag-na is possble only on slngle and double storey building.
On the comices below the Jabzhi roof, Norbu Bagam and Norbu Horzhu may be omitted or either one of them may be used.
Tsechukhanyim cannot be omitted from a Rabsel. Also it is not permitted to use it as a decorative element without a Rabsel as shown in Photo 6c.
Above a Kachhen minimum cornices required are Zhu, Dhung, Pedma and Tsechukhanyim.
Drey-zhu is not permitted between double tiers Rabsel.
On a commercial building of more than three storeys with Kachhen in the ground floor and a Rabsel on the second and third floor, the first floor wall must not bear any replication of ekra although the wall shall stand on the Tsechukhanyim at the first floor level.
If the Rabsel is only on the third floor either with plain or Drey-zhu Rabsel, the first and second floor may not have ekra cladding although it may be standing on Tsechukhanyim at the first floor level.
However, if successive floors are projected out with cornices then Shamig shall be provided on all. In such cases the Tsechukhanyim would be provided only at the first floor level.
Shamig (ekra) cladding on replicated Rabsel is not mandatory.
Illus 6b
A typical four storeyed commercial building with Drey-Zhu Rabsel on fourth floor level and Tsechukhanyim at first floor level.
Photo 6c
Tsechukhanyim only as a decorative element, which is not permitted.